NAVY MIL-H-24936-1987 HOOD ANTI-FLASH FLAME RESISTANT《防火防闪头盔》.pdf

1、. 3 MIL-H-24936 1 July 1987 MILITARY SPECIFICATION HOOD, ANTI-FLASH, FLAME RESISTANT This specification is approved for use by all Departments and Agencies of the Department of .Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for one type and size knitted 80% PFR rayon/ZO%.PB

2、I hood. 2 APPLICABLE DOCUMENTS 2.1. Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards , and handbooks form a part of this specification to the extent specified .herein. Unless otherwise specified, the issues of these documents shall be thos

3、e listed in the issue of the Department of Defense Index of Specifications and. Standards (DODISS) and supplement thereto, cited in the solicitation. -1 SPEC IF ICAT IONS FEDERAL . . . NN-P -7 1 DDD-L-20 - PPP-B-6 36 d Pallet , Material Handling, Wood Stringer, Label; for Clothing, Equipage, and Ten

4、tage (General Boxes, Shipping, Fiberboard Construction, 2 Way and 4 Way (Partial) Us e) Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in-improving this document should be addressed to: Officer in Charge, Navy Clothing and Textile Research Faci

5、lity, 21 Strathmore Road, Natick, MA 01760-2490 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 8415 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. t 7 THIS DO

6、CUMENT CONTAINS /? PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24936 MILITARY MIL-P-150 11 - Pallet, Material Handling, Wood, Post Construction, MIL-T-83193 - Thread, Aramid, Spun Staple 4 Way Entry STANDARDS FEDERAL FED-STD-191 - Tex

7、tile Test Methods FED-STD-751 - Stitches, Seams, and Stitchings MIL I TARY MIL-STD-10 5 - Sampling Procedures and Tables for Inspection by MIL-STD-129. . MIL-STD-147 - Palletized Unit Loads Attributes - Marking For Shipment and Storage (Copies of specifications, standards drawings, .and publications

8、 required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer .) 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications fo

9、rm a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. LAWS .AND REGULATIONS US POSTAL SERVICE MANUAL (Copies of the manual may be obtained from the Superintendent of Documents, US Government Pr

10、inting Office, Washington, DC 20420). 2.2 Other publications. The following document(s) form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shali be those listed in the issue of the DODISS specified in the so

11、licitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall be the issue of the nongovernment documents which is current on the date of the , solicitation. . i NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENT Nat i onal Mo tor Freight C1 asci f i cat i on (A

12、pplications for copies should be addressed to the American Trucking Association, ATTN: Traffic Department, 1616 P Street, N.W., Washington, DC 20036). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i 2.3 Order of precedence. In the event of a conf

13、lict between the text of this specification and the references cited herein, the text of this specification shall take precedence. Nothing in this specification however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. MIL-H-2473b 84 W 777770b 0384877 b

14、W MIL-H-24936 UNIFORM CLASSIFICATION COMMITTEE, AGENT Uniform Freight Classification (Applications for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, Illinois 60606). 3. REQUIREMENTS 3.1 Guide sample. Samples, when furnished, are so

15、lely for guidance and information to the contractor (see 6.3). Variations from this Specification may appear in the sample in which case this specification shall govern. 3.2 First article. When specified, the contractor chal-1 furnish sample unit(s) for first article inspection and approval (see 4.3

16、 and 6.2). 3.3 Material. 3.3.1 Basic material. The basic material used in the hood shall be a 1x1 rib knit of 80% PFR rayon and 20% PBI blended yarn, when tested as specified in 4.41. . 3.3.1.1 Rayon. The PFR rayon is manufactured by metering water-insoluble poly (n-propoxyphosphazene) into viscose

17、solution from which rayon fibers are spun. The fibers contain the flame retardant which is highly dispersed in a matrix of cellulose. The fiber shall be a blend of 50 percent 1-1/2 denier, 2 inch staple, and 50 percent 3 denier, 2 inch staple, when tested as specified in 4.4.1. 3.3.1.2 PBI. The fibe

18、r shall be 1-1/2 denier, 2 inch staple, when tested as specified in 4.4.1. 3.3.1.3 Color. The color shall be natural. 3.3.1.4 Nonfibrous material. The cloth shall contain no more than 1.0 percent starch and protein content including chlorof orm-soluble and water-soluble material when tested as speci

19、fied in 4.4.1. 3 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-ZLI73b 8i.I W 777770b 038Lt700 7 W a MIL-H-24936 E e 3.3.1,5 Physical requirements. The finished cloth shall conform to the physical requirements shown in Table I when tested as

20、 specified in 4.4.1. TABLE I. Physical requirements Characteristics Minimum Maximum Weight, oz/yd2 (g/m 2 ) Thickness, inches (2.54 cm) Wales/Courses per inch (2.54 cm) Wal es Cour ses Burst strength, lbs (N) Flame resistance, Initially and after 25 launderings: After flame time, seconds After glow

21、time, seconds Char length, inches (2.54 cm) 5.7( 193.2) 0.035 21 28 - 50 (222.5) 6.5 (220.4) 0.05 2 5 5 3.3.2 Thread. The thread for seaming and stitching the hood shall be aramid, spun staple, ticket no. 4.5, 3-ply, conforming to ML-T-83193. The color of the thread shall be natural. 3,3.3 Cotton el

22、astic webbing. The unblached elastic cotton webbing shall conform to the requirements in Table II (see 6.4), when tested as specified in 4.4.1. TABLE II. Webbing properties Width Thi c kne s s Ounces per linear yard Elongation ( i nches 1 (inches) . (inches) 1/4 - + 1/32 .016-.046 0.083 (+ - 0.02) 3

23、.5 (+ - 0.5) 3.3.4 Binding. The binding for the face opening of the hood and the bottom edge, of the yoke shall be basic material as specified in 3.3.1. The binding shall be. cut 1-i/4 inch wide, at a 5 degree crosscut pattern in continuous roll lengths. The finished width of the binding shall be 1/

24、2 (+ - 1/16) inch. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b MIL-H-24936 84 W 9999706 0384901 O W - MIL-H-24936 3.3.5 Label. Each finished hood shall have a combination identification and warning label conforming to type V, class 15, of DDD

25、-L-20. The cloth label shall be cotton and the adhesive coating is not required. The printing shall show fastness to laundering, and shall bear the following inscription: * HOOD, ANTIFLASH, FLAME RESISTANT CONTRACT NO: DLA-100-00-0-0000 (Example) FIBER CONTENT: 80% PFR RAYON/20% PBI NAME AND ADDRESS

26、 OF CONTRACTOR: STOCK NO: 8415-00-000-0000 (EXAMPLE) LAUNDERING INSTRUCTIONS Machine wash warm Tumble dry medium heat or Foliow NAVEDTRA Manual 414-01-45-81, Formula III . WARNING . DO NOT KEEP IN DIRECT CONTACT WITH FLAME. PROTECTIVE QUALITIES. FAILURE TO COMPLY WITH . KEEP GARMENT CLEAN, SOILING W

27、ILL REDUCE INSTRUCTIONS MAY RESULT 1N.SERIOUS INJURY. DO NOT REMOVE THIS LABEL 3.4 Design. The hood shall be shoulder length, round at the top and flared at the bottom. The circular face opening shall have bias binding with enclosed elastic webbing. The top portion of the hood shall be two plies of

28、the basic material and the yoke shall be single ply of the basic material. 3.4.1 Figure. Figure 1 is furnished for information purposesonly. When inconsistencies exist between the specification and the figure, the specification shall govern. 3.5 Patterns. Standard patterns to be used to cut the work

29、ing patterns will be furnished by the Government (see 6.3). The wgrking patterns shall be identical to the Government patterns. Neither the Government patterns nor the working patterns shall be altered in any way. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license

30、 from IHS-,-,-MIL-H-24936 4 4999906 0384902 2 I. MIL-H-24936 3.5.1 List of pattern parts. The component parts of the hood shall be cut from the material as specified, and in accordance with the number of parts required for the manufacturing process as follows: Materials Nomemclature of pattern parts

31、 Cut parts C1 o t h , kni t t ed Hood top 80% PFR rayon/20% PBI Yoke 2 2 3.6 Construction. 3.6.1 Stitches, seams, and stitchings. Stitch, seam, and stitching types specified in Table III shall conform to FED-STD-751. Whenever two or more methods for seam or stitch types are given for the same part o

32、f the operation, any one may be used. The looper thread (underthread) of all stitch types shall be on the inside of the hood. The stitching on the binding wil-2 be .gauged so that (i) the distance between the rows of stitching is 1/4 (+ 1/16) inch, and (2) the distance from the folded edges to the s

33、titching isl/8 (+ - 1/16) inch. 3.6.2 Stitches per inch. The minimum and maximum number of stitches per inch shall be as specified in Table III. 3.6.3 Thread breaks and ends of seams. Ends of all seams and stitchings, when not caught in other seams or stitchings, shall. be backtacked not less than 1

34、/4 inch. Thread breaks (all stitch types) shall be secured by stitching back of break not less than 1/2 inch. Skipped stitches or thread breaks, shall be repaired by using 301 stitch type. 3.7 Manufacturing operation requirements. The contractor shall manufacture the hoods in accordance with the ope

35、rations specified in Table III. The contractor is not required to follow the exact sequence of operations listed provided that the finished hood is identical to that produced by following the sequence of operations as listed in Table III. 3.7.1 Abbreviations in table of operations. The abbreviations

36、 used in table I are as follows: Stch - Stitch in - inch Nd 1 - Needle Bob - Bobbin LPr Mchne - Machine Brtck - Bartack Comrcl - Commercial smlr - similar Btnhl - Buttonhole incl - including dbl - double chnstch - chains ti t ch - Looper I. . i 6 Provided by IHSNot for ResaleNo reproduction or netwo

37、rking permitted without license from IHS-,-,-MIL-H-24736 84 M 7947706 0384703 4 MIL-H-24936 TABLE III. Construction of hood Thread NO Opera t i on Stch Seam/ Stch Ndl Bob/ Type Stch type in LPr 1. Cutting. a. All parts of the hood shall be cut in strict accordance with patterns furnished which show

38、shape, directional lines for cutting, placement of component parts, and notches for proper assembly of all component parts. b. Cut elastic webbing as specified (see 3.3.3) 10-1/4 (+ - 1/4) inches for the face opening. 2. Replacement of defective components. During spreading, cutting, and manufacturi

39、ng process, components- having material defects or damages that are classified as defects in Section 4, shall be removed from production and replacel with non-def ective and properly matched compnents. 3. Assemble hood top. Place both plies together so that all raw edges are even. NOTE: Work all hoo

40、d top operations as two ply. To eliminate slippage of plies, stay stitching may be used along the outer edge, excluding the face opening. 4. Bind face opening. a, Keeping the raw edges of the face opening - even, stitch the binding while enclosing the el as t i c webbing . b. The elastic shall be fu

41、lly extended and positioned between stitch lines of the binding. (Caution: Care shall be taken so that the elastic is not caught in stitching.) C. The finished width and gauge of the binding shall be as specified (see 3.3.4 and 3.6.1). 7 402 or BSb-2 15-17 45 45 40 6 Provided by IHSNot for ResaleNo

42、reproduction or networking permitted without license from IHS-,-,-MIL 43-2 4 9 3 6 TABLE III. Construction of hood Thread e NO Operation Stch Seam/ Stch Ndl Bob/ Type Stch type in LPr 5. Stitch center back of hood top. a. Abutt seams of center back of hood top and seam from neck edge to face opening

43、. b. Extend chain of type 607 stitching 1/2 to 3/4 inch. 6. Bind bottom edge of yoke pieces. a. Stitch the binding to the bottom edge of both yoke pieces. b. The finished width and the gauge of the - binding shall be as specified (see 3.3.4 and 3.6.1). 7. Seam yoke. al. Abutt one shoulder seam of bo

44、th yoke pieces, stitching from neck edge to bottom edge. b. Extend chain of the type 607 stitching 1/2 to 3/4 inch. 8. Join yoke to hook top. a. The hood top neck edge and the yoke neck edge shall be aligned according to the patterns. . Starting at the open shoulder seam of yoke, stitch the yoke to

45、the hood top with seams abutted along neck edge returning to starting point and continuing down shoulder seam bottom edge. b. Extend chain of the type 607 stitching 1/2 to 3/4 inch. 9. Bartacking. a. Fold under runoffs in operations 5, 7, and 8 and bartack 1/8 (+ 1/16) inch from finished edge. Trim

46、chain to1/4 inch. 12-14 45 45 607 FSa-1 40 6 60 7 60 7 402 or BSb-2 15-17 45 45 FSa-1 12-14 45 45 F Sa- 1 12-14 45 45 Brtck 16-18 45 45 Per brtck 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-24 936 -3 TABLE III. Construction of hood Thread

47、 NO Ope rat i on Stch Seam/ Stch Ndl Bob/ Type Stch type in LPr b. The width of the bartack shall be 1/2 (+ 1/8) inch. - 10. Labeling. Each hood shall have the combination 301 LSbj-1 . 8-10 45 45 identification and warning label stitched on all four sides to the inside center of the back yoke. The l

48、abel shall be centered ana positioned approximately 1/4 inch above the binding. Sxitching shall not be through the print i ng . 11. Trimming and cleaning. a. Trim all thread ends. b. Remove all loose threads. C. Remove all spots and stains. ; . 9 . +-. Provided by IHSNot for ResaleNo reproduction or

49、 networking permitted without license from IHS-,-,-6. . i MIL-H-24936 84 I 9999906 038q90b T I MIL-H-24936 e 3.8 Measurements. The finished hood shall conform to the dimensions specified in Table IV. Al1 measurements are expressed in inches. The hood shall be positioned so that the side view is shown. The hood shall be smooth and flat, with all edges even. Table IV - Finish